[16736] in bugtraq
Re: The DF Bit Playground (Identifying Sun Solaris & OpenBSD OSs)
daemon@ATHENA.MIT.EDU (Aaron Campbell)
Tue Sep 12 19:33:10 2000
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Message-Id: <Pine.BSO.4.20.0009121731180.29631-100000@naughty.monkey.org>
Date: Tue, 12 Sep 2000 17:33:37 -0400
Reply-To: Aaron Campbell <aaron@MONKEY.ORG>
From: Aaron Campbell <aaron@MONKEY.ORG>
X-To: ofir@ITCON-LTD.COM
To: BUGTRAQ@SECURITYFOCUS.COM
On Tue, 12 Sep 2000, Ofir Arkin wrote:
> The tcpdump trace below illustrates the reply an OpenBSD 2.7 box produced
> for an ICMP Echo Request.
[snip]
> [root@godfather bin]# ./sing -echo Host_Address
> SINGing to www.openbsd.org (IP_Address): 16 data bytes
> 16 bytes from IP_Address: icmp_seq=0 DF! ttl=233 TOS=0 time=367.314 ms
You're assuming that www.openbsd.org is actually running OpenBSD. It's
not. Due to bandwidth requirements and such, it's hosted by the University
of Alberta and this box is actually running SunOS.
Reviewing tcpdump output on a Linux box pinging an OpenBSD 2.8-beta box, I
see no DF bit set in the IP header.
---
Aaron Campbell (aaron@monkey.org || aaron@openbsd.org)
